DEFINITIONS

Meter An instrument designed to measure continuously, memorise and display the quantity at metering conditions of liquid flowing through the measurement transducer in a closed, fully charged conduit. Calculator A part of a meter that receives the output signals from the measurement transducer(s) and possibly, from associated measuring instruments and displays the measurement results. Associated measuring instrument An instrument connected to the calculator for measuring certain quantities which are characteristic of the liquid, with a view to make a correction and/or conversion. Conversion Device A part of the calculator which by taking account of the characteristics of the liquid (temperature, density, etc.) measured using associated measuring instruments, or stored in a memory, automatically converts: the volume of the liquid measured at metering conditions into a volume at base conditions and/or into mass, or the mass of the liquid measured at metering conditions into a volume at metering conditions and/or into a volume at base conditions Note: A conversion device includes the relevant associated measuring instruments. Base conditions The specified conditions to which the measured quantity of liquid at metering conditions is converted. Measuring System A system that comprises the meter itself and all devices required to ensure correct measurement or intended to facilitate the measuring operations. Fuel dispenser A measuring system intended for the refuelling of motor vehicles, small boats and small aircraft. Self-service arrangement An arrangement that allows the customer to use a measuring system for the purpose of obtaining liquid for his own use. Self-service device A specific device that is part of a self-service arrangement and which allows one of more measuring systems to perform in this self-service arrangement. Minimum measured quantity (MMQ) The smallest quantity of liquid for which the measurement is metrologically acceptable for the measuring system. Direct indication The indication, either volume or mass, corresponding to the measure and that the meter is physically capable of measuring. Note: The direct indication may be converted into another quantity using a conversion device. Interruptible/non-interruptible A measuring system is considered as interruptible/non-interruptible when the liquid flow can/cannot be stopped easily and rapidly. Flowrate range The range between the minimum flowrate (Q_(min)) and maximum flowrate (Q_(max)).

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Source: EUR-Lex (Cellar) · retrieved 2026-11-06 · Text as adopted (Official Journal); later amendments are not incorporated in this text.